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<a name = "hj-top"> </a><table class = "table1" id = "table11"><tr><td><table class = "DocHeader"><tr><td class = "DocHeader1" colspan = "2"><h1>Maximize a Certain Mode</h1></td></tr><tr><td class = "DocHeader4" colspan = "2"/></tr><tr><td class = "DocHeader3" colspan = "2"><table class = "DocThemeIntro" id = "table12"><tr><td class = "Intro1Only"><p class = "header"><p class = "abstract">
<span class = "shortdesc">You can use mode tracking to view a single mode. </span>

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<pre class = "codeblock">
<code class = "ph codeph">
DRESP
 ID_NAME  = dresp_eig2
 DEF_TYPE = SYSTEM
 TYPE     = DYN_FREQ
 LC_SET   = Modal,All,2
END_

OBJ_FUNC
 ID_NAME = max_ dresp_eig2
 DRESP   = dresp_eig2
 TARGET  = MAX
END_

OPTIMIZE
 ID_NAME  = opt
 DV       = my_design_nodes
 STRATEGY = BEAD_SENSITIVITY
 OBJ_FUNC = max_ dresp_eig2
END_

OPT_PARAM
 ID_NAME      = my_parameters
 OPTIMIZE     = opt
 MODETRACKING = ON
 MODENUMBERS  = 10
END_
</code>
</pre>
<p>The second mode is chosen to be maximized. The important difference is
that mode tracking is activated in the optimization parameters (<code class = "ph codeph">MODETRACKING=
ON</code>). The default for mode tracking in <span class = "ph">SIMULIA Tosca Structure</span>
is to take 5 modes into account, but this can be changed with the item
<code class = "ph codeph">MODENUMBERS</code>. This should not be set too high because
of computational effort.</p>
<table class = "table" id = "tso-c-usr-beadSensEvOpt-beadMaxSingleMode__aa211500"><caption/><colgroup><col/></colgroup><tbody class = "tbody">
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<td class = "entry"><br/><img class = "image" src = "../TsoUserImages/aa033a3c.png" width = "450"/><br/></td>
</tr>
<tr class = "row"><td class = "entry">Optimization displacements and convergence plots without (a) and with (b) mode tracking</td></tr>
</tbody></table>

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